A Buckeye Tax Reform

Kasich joins the queue of income-tax cutting GOP Governors.

Updated Feb. 13, 2013 12:01 a.m. ET

Few states outside the South and Mountain West have recovered faster from the financial crisis than Ohio, and now Governor John Kasich is betting on tax reform to keep it going. He's another GOP statehouse executive creating a sharp policy contrast with California, New York—and Washington, D.C.

The plan's centerpiece is a 20% cut over three years in all of the state's nine income tax rates. The top rate would fall to 4.725% from...